Caster wheel bracket, caster and movable container

A caster wheel bracket, detachably mounted to an underside of a frame, the underside of the frame being formed by a plurality of transverse rods and longitudinal rods that are perpendicularly connected to each other;

• the caster wheel bracket including a support plate for supporting the underside of the frame;
• a first restricting portion being disposed on an upper surface of the support plate, the first restricting portion being detachably fitted to corresponding two of the transverse rods, a second restricting portion being disposed on one end of the support plate, the second restricting portion being detachably fitted to a corresponding one of the longitudinal rods, a mounting portion being connected to a lower surface of the support plate for mounting a caster wheel;
• the first restricting portion is a protruding structure formed on the upper surface of the support plate, the corresponding two transverse rods of the underside of the frame are clamped on both sides of the first restricting portion in a tight fit manner.